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WO2007008031A1 - Fixation pour implant dentaire - Google Patents

Fixation pour implant dentaire Download PDF

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Publication number
WO2007008031A1
WO2007008031A1 PCT/KR2006/002727 KR2006002727W WO2007008031A1 WO 2007008031 A1 WO2007008031 A1 WO 2007008031A1 KR 2006002727 W KR2006002727 W KR 2006002727W WO 2007008031 A1 WO2007008031 A1 WO 2007008031A1
Authority
WO
WIPO (PCT)
Prior art keywords
dental implant
implant fixture
bone
fixture
border
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2006/002727
Other languages
English (en)
Inventor
Ill-Mo Rhew
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US11/995,284 priority Critical patent/US8491304B2/en
Publication of WO2007008031A1 publication Critical patent/WO2007008031A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
    • A61C8/0022—Self-screwing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/0077—Connecting the upper structure to the implant, e.g. bridging bars with shape following the gingival surface or the bone surface
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy

Definitions

  • the present invention relates to the fixture of a dental implant that serves as a replacement for a missing tooth by being implanted in human maxillary or mandibular bone.
  • this invention provides a dental implant fixture in which the border between the rough and smooth surfaces is fabricated to be inclined, for the treatment of patients having inclined bone crest on maxilla or mandible.
  • a dental implant is an artificial structure designed to replace a missing tooth.
  • An artificial tooth root part of a dental implant which is composed of biologically inert material, is made to be embedded and to adhere to the alveolar bone of the missing tooth.
  • An artificial tooth crown part of a dental implant is then connected onto the artificial dental root so as to restore the original function of the missing tooth.
  • a dental implant fixture is the artificial dental root part of a dental implant, which is made to be placed into the alveolar bone.
  • the dental implant fixtures of the early days had smooth surfaces formed by machining the surface of titanium rods.
  • researchers have focused on the development of a dental implant fixture having a certain roughness on the surface in order to enlarge the surface area contacting the maxillary or mandibular bone, and thus to achieve a high success rate even under the conditions of insufficient bone quality or quantity, to make it function properly within a short period of time and to be successful with a shorter length.
  • finishing the surface of a dental implant fixture with certain roughness has merits in biological aspects, not only by enlarging the area of mechanical contact with the bone, but also by accelerating the osseointegration between bone and the dental implant fixture.
  • a dental implant fixture having rough surface is more feasible to induce osseoin- tegration and has a larger surface of contact with bone, while a dental implant fixture having smooth surface gives superior results in the reaction with soft tissue covering the bone (Kim and Hwang, ibid.).
  • a dental implant fixture having rough surface is exposed to the outside of the soft tissue barrier, which defends against bacterial invasion, the roughness of the surface causes accumulation of plaque (bacterial membrane on the tooth surface) more easily than the smooth surface, thus inducing periodontitis and subsequent loss of alveolar bone, and also increasing the risk of implant failure in the long term (Kim and Hwang, ibid.).
  • the dental implant fixtures having rough surfaces are designed to have smooth-surfaced collars/cuffs in the coronal part, where the dental implant fixture is brought into contact with the soft tissue (Fig. 1).
  • the dental implant fixture is usually designed to have a smooth surface contacting with the soft tissue, at the apical end of the dental implant abutment where the abutment joins with the fixture.
  • Such dental implant fixtures have their placement protocols which say the R/S borders, all designed to be horizontal although their vertical locations vary depending on companies, should be placed at a position lower than the bone crest (the highest part of the alveolar bone).
  • the objects of these placement protocols are to protect the rough surfaces of the dental implant fixtures from bacterial attack by placing the rough surfaces inside of the bone. This serves as a secondary protective barrier to bacterial attack. So, even when the gingiva which serves as a primary protective barrier to bacterial attack has been destroyed by periodontitis, etc., the rough surfaces can be safe inside of the bone.
  • Such placement protocols have been established because exposure of the rough surface of the dental implant fixture to the bacteria in oral cavity could be fatal to the survival of implant (Fig. 2).
  • the crestal bone is often inclined downward from the lingual side toward the buccal side, more often than the cases where the crestal bone is flat and horizontal. This is because bone resorption due to disuse atrophy of the maxillary or mandibular bone occurs more actively on the buccal side after loss of a tooth. Such inclination occurs more frequently in the mandibular bone compared to the maxillary bone (Branemark, Per-Ingvar, Ed., Branemark Implant: Surgery, translated by Cho, Sung-Am, Chunji Publisher Company, Seoul, pp.
  • part of the bone protruded upward should be removed to flatten the crestal bone as illustrated in Fig. 4, or alternatively, guided bone regeneration should be performed at the inclined part of the crestal bone as illustrated in Fig. 5.
  • An object of the present invention is to address such problems existing in conventional dental implant fixtures that serve as replacements of missing teeth in human maxillary or mandibular bones, and to provide fixture which has the R/S border (border between the rough and smooth surfaces) formed to be inclined for the treatment of patients having inclined bone crest.
  • the present invention provides a dental implant fixture comprising a rough- surfaced lower part having a predetermined roughness, and a smooth-surfaced upper part having a roughness lower than the roughness of the rough-surfaced lower part, wherein a plane containing the R/S border (the border between the rough and smooth surfaces) is formed to be inclined to a plane perpendicular to the long axis (central axis) of the dental implant fixture.
  • the difference between the maximum height and the minimum height of the rough surface in the direction parallel to the long axis of the dental implant fixture is in the range of 1 to 3 mm.
  • an identification mark is formed on the upper surface of the dental implant fixture, and the identification mark indicates the direction toward the minimum height or maximum height of the rough surface of the dental implant fixture.
  • fixture threads are formed only on the rough surface of the dental implant fixture.
  • microgrooves are formed on the smooth surface of the dental implant fixture.
  • the dental implant fixture of the present invention which has the inclined R/S border to the plane perpendicular to the long axis of the dental implant fixture, is remarkably effective in preventing any reduction in the implant stability caused by a bone removal procedure in patients having inclined bone crest, and in eliminating disadvantages in the aspects of expenses caused by guided bone regeneration, inconvenience of operation, and possible infection.
  • the dental implant fixture of the present invention is also highly advantageous when a practitioner uses one-staged approach.
  • FIG. 1 is a front view of a conventional dental implant fixture.
  • FIG. 2 is a diagram illustrating the status of a conventional dental implant fixture placed in the bone.
  • FIG. 3 is a diagram illustrating the status of a conventional dental implant fixture placed in a bone having inclined bone crest.
  • FIG. 4 is a diagram for illustrating a method for implant placement through bone reduction procedure.
  • FIG. 5 is a diagram for illustrating a method for implant placement through guided bone regeneration.
  • Fig. 6 is a diagram illustrating the status of a dental implant fixture according to an embodiment of the present invention placed in a bone having inclined bone crest.
  • Fig. 7 is a partial front view of a dental implant fixture according to an embodiment of the present invention, in which the R/S border is curved.
  • FIG. 8 is a conceptual diagram illustrating the status in which a plane containing the
  • R/S border intercepts a plane perpendicular to the long axis of the dental implant fixture of the present invention.
  • FIG. 9 is a planar view of a dental implant fixture according to an embodiment of the present invention having an identification mark.
  • Fig. 10 is a front view of a fixture mount, and a diagram illustrating the status in which the fixture mount is joined with a dental implant fixture according to an embodiment of the present invention.
  • Fig. 11 is a top front view of a dental implant fixture according to an embodiment of the present invention, in which fixture threads are formed only on the rough surface.
  • FIG. 12 is a top front view of a dental implant fixture according to an embodiment of the present invention, in which microgrooves are formed on the smooth surface.
  • FIG. 6 is a diagram illustrating the status of a dental implant fixture according to an embodiment of the present invention placed in a bone having inclined bone crest.
  • the R/S border of the dental implant fixture of the present invention is formed at an angle to the horizontal. Such formation of the R/S border is intended, when placing a dental implant fixture in a not too excessively inclined bone crest, to place the rough surface of the dental implant fixture inside the bone without removing any protruded bone part or performing guided bone regeneration.
  • the dental implant fixture 10 or 20 of the present invention comprises a rough- surfaced lower part 300 having a predetermined roughness and a s mooth- surfaced upper part 100 having a roughness lower than the roughness of the rough- surfaced lower part, and a plane containing the R/S border 200 is formed inclined to the plane perpendicular to the long axis of the dental implant fixture.
  • the plane containing the R/S border 200 can be planar as illustrated in Fig. 6, or can be curved as illustrated in Fig. 7.
  • the phrase "(the plane containing the R/S border 200) is formed to be inclined to a plane perpendicular to the long axis of the dental implant fixture” implies that the plane containing the R/S border 200 intercepts a plane perpendicular to the long axis of the dental implant fixture on a single line, as illustrated in Fig. 8.
  • the dental implant fixture having an inclined R/S border 200 in accordance with the inclined bone crest 32 is advantageous in the following aspects.
  • the dental implant fixture should be completely embedded in the gingiva during the first-stage operation to prevent infection. And the embedded dental implant fixture needs to be exposed to the outside of the gingiva after several months through second surgery. Thus, the operation is to be performed two times.
  • a dentist performing implant placement would mainly use those conventional dental implant fixtures having horizontal R/S borders and could keep the dental implant fixtures of the present invention having inclined R/S borders as supplements. Then, the dentist may selectively, and also advantageously, use the dental implant fixtures of the present invention for the sites where slight inclined bone crest is, where guided bone regeneration is not necessary, and where slight recession of the gingiva is not considered as a serious esthetic defect or esthetic aspects are less important, such as mandibular posterior areas or maxillary posterior areas.
  • Fig. 9 is a planar view of a dental implant fixture according to an embodiment of the present invention, having an identification mark formed thereon.
  • the dental implant fixture 10 or 20 of the present invention is characterized in that an identification mark 120 is formed on the upper surface, and this identification mark 120 indicates the direction toward the minimum height or maximum height of the rough surface.
  • the dentist performing the operation can look at the upper surface of the dental implant fixture 10 or 20, or the upper surface of a fixture mount 40, specifically the identification mark 120 formed on the shoulder part of the dental implant fixture 10 or 20 or on the fixture mount 40, and locate the inclined R/S border 200 at a desired site.
  • the fixture mount 40 is an element designed to detachably join with the upper surface of the dental implant fixture 10 or 20, as illustrated in Fig. 10. This element prevents any deformation of the dental implant fixture 10 or 20 that can possibly occur when a force is directly exerted to the dental implant fixture 10 or 20 by an instrument used to rotate the dental implant fixture 10 or 20 during placement in the bone, and secures an area of exposure, apart from the dental implant fixture 10 or 20, to provide a site to which the instrument for rotating the dental implant fixture can transfer a rotating force, in the case where the placement has proceeded to a great extent.
  • an identification mark 120 on the upper surface of the dental implant fixture when the instrument for rotating the dental implant fixture is directly attached to the dental implant fixture 10 or 20; while it is preferable to have an identification mark 120 on the upper surface of the implant fixture mount 40, when the instrument is attached to the fixture mount 40.
  • FIG. 11 is a front view of the upper part of a dental implant fixture according to an embodiment of the present invention, having a fixture thread formed only on the rough surface.
  • the thread of the dental implant fixture 10 or 20 can be formed only on the rough surface. That is, the smooth surface of the dental implant fixture 10 or 20 is maintained as a cylindrical surface without any thread or grooves. This is because a smooth surface having no thread is more advantageous in adhering to the soft tissue, and causes less plaque deposition, and therefore better resistance to periodontitis, compared with a surface having threads, even in the case where the attachment of the dental implant fixture to the soft tissue fails and the dental implant fixture is exposed to the outside.
  • Fig. 12 is a front view of the upper part of a dental implant fixture 10 or 20 according to an embodiment of the present invention, having microgrooves 130 formed on the smooth surface.
  • the dental implant fixture of the present invention can have microgrooves 130 form ed on the smooth surface, instead of a screw thread.
  • Microgrooves 130 facilitate stronger attachment of the connective tissue in the gingiva to the smooth surface of the dental implant fixture (Han, Jong-Hyun, et al., "How can bone resorption be minimized in a dental implant?", Clinical Dentistry, 24(11), pp. 1360-1363 (2004)).

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Prosthetics (AREA)

Abstract

L’invention concerne une fixation pour implant dentaire qui sert de remplacement d’une dent manquante ; elle est implantée dans l’os maxillaire ou mandibulaire. La fixation comporte une marge R/S (marge entre la surface rugueuse et la surface lisse) inclinée par rapport à un plan perpendiculaire au grand axe (axe central) de la fixation pour implant dentaire. La fixation pour implant dentaire empêche la réduction évidente du support de l’implant dentaire suite à une procédure de raréfaction osseuse chez un patient qui possède une crête osseuse inclinée. La fixation pour implant dentaire met fin aux inconvénients d’ordre financier par la mise en place d’une technique de régénération osseuse surveillée, elle permet d’éviter de longues opérations et d’éliminer le risque d’infection. La fixation pour implant dentaire possède également un avantage considérable : dans la plupart des cas, elle nécessite une seule opération.
PCT/KR2006/002727 2005-07-11 2006-07-11 Fixation pour implant dentaire Ceased WO2007008031A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/995,284 US8491304B2 (en) 2005-07-11 2006-07-11 Dental implant fixture

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2005-0062391 2005-07-11
KR1020050062391A KR100728815B1 (ko) 2005-07-11 2005-07-11 치과용 임플란트 고정체

Publications (1)

Publication Number Publication Date
WO2007008031A1 true WO2007008031A1 (fr) 2007-01-18

Family

ID=37637350

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2006/002727 Ceased WO2007008031A1 (fr) 2005-07-11 2006-07-11 Fixation pour implant dentaire

Country Status (3)

Country Link
US (1) US8491304B2 (fr)
KR (1) KR100728815B1 (fr)
WO (1) WO2007008031A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100887212B1 (ko) 2007-07-10 2009-03-06 함종욱 치과용 임플란트 고정장치
CH702192A1 (de) * 2009-11-04 2011-05-13 New Dent Ag Keramisches Implantat.
USD659829S1 (en) * 2010-03-23 2012-05-15 Gc Corporation Housing container for dental implant fixture
US8684732B2 (en) 2010-12-15 2014-04-01 Bennett Jacoby System and method for prevention and treatment of peri-implant infection
EP2491886B1 (fr) * 2011-02-24 2014-05-07 Marcus Abboud Implant dentaire pour soutenir une suprastructure d'implant
US20120237899A1 (en) * 2011-03-03 2012-09-20 Astra Tech Ab Dental implant assembly
KR101337417B1 (ko) * 2011-06-02 2013-12-06 정제교 영상정보 정합을 위한 골 고정형 표지물
KR101308945B1 (ko) * 2012-01-19 2013-09-24 오스템임플란트 주식회사 치과용 픽스쳐
US9168110B2 (en) 2012-05-29 2015-10-27 Biomet 3I, Llc Dental implant system having enhanced soft-tissue growth features
KR101452477B1 (ko) * 2013-10-04 2014-10-22 유일모 다수개의 종방향 톱니부를 갖는 프레스 핏 치과 임플란트
WO2015106247A1 (fr) 2014-01-13 2015-07-16 Westover Brock B Ensemble implant dentaire endo-osseux
KR20220095638A (ko) 2020-12-30 2022-07-07 오스템임플란트 주식회사 치과 임플란트용 어버트먼트
US20230190417A1 (en) * 2021-12-20 2023-06-22 feras Al rezk Dental implant platform and connection

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0241151A (ja) * 1988-07-29 1990-02-09 Kyocera Corp 人工歯根
JPH07328036A (ja) * 1994-06-15 1995-12-19 Nikon Corp 骨内インプラントおよびその製造方法
JPH10211218A (ja) * 1997-01-29 1998-08-11 Brain Beesu:Kk 歯科用インプラントのフィクスチャ−

Family Cites Families (8)

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US4103422A (en) * 1975-03-07 1978-08-01 Oratronics, Inc. Threaded self-tapping endodontic stabilizer
US6790040B2 (en) * 1999-11-10 2004-09-14 Implant Innovations, Inc. Healing components for use in taking impressions and methods for making the same
US6406295B1 (en) * 2001-07-13 2002-06-18 Brian A. Mahler Identification of dental implant components
DE10159683A1 (de) * 2001-11-30 2003-06-18 Michael Gahlert Dantalimplantat
WO2003047455A1 (fr) * 2001-12-03 2003-06-12 Cottrell Richard D Implant dentaire modifie
US20040063071A1 (en) * 2002-09-30 2004-04-01 Schroering Dental implant having threads with variable depth
EP1626671A2 (fr) * 2003-05-16 2006-02-22 Nobel Biocare Services AG Systeme d'implant dentaire
KR200345611Y1 (ko) 2003-11-13 2004-03-18 이재목 치과용 임플란트

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0241151A (ja) * 1988-07-29 1990-02-09 Kyocera Corp 人工歯根
JPH07328036A (ja) * 1994-06-15 1995-12-19 Nikon Corp 骨内インプラントおよびその製造方法
JPH10211218A (ja) * 1997-01-29 1998-08-11 Brain Beesu:Kk 歯科用インプラントのフィクスチャ−

Also Published As

Publication number Publication date
US8491304B2 (en) 2013-07-23
KR100728815B1 (ko) 2007-06-19
KR20070007640A (ko) 2007-01-16
US20080213728A1 (en) 2008-09-04

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